Article history: Received 8 September 2011 Accepted 23 November 2012 Available online 27 November 2012 Communicated by D. Wagner

Probabilistic methods for point set registration havedemonstrated competitive results in recent years. Thesetechniques estimate a probability distribution model of thepoint clouds. While such a representation has shownpromise, it is highly sensitive to variations in the den-sity of 3D points. This fundamental problem is primar-ily caused by changes in the sensor location...

in this paper we investigate the existence and uniqueness for volterra-fredholm type integral equations and extension of this type of integral equations. the result is obtained by using the  coupled fixed point theorems in the framework of banach space $ x=c([a,b],mathbb{r})$. finally, we  give an example to illustrate the applications of our results.

in this article, we verify existence and uniqueness of positive and nondecreasing solution for nonlinear boundary value problem of fractional differential equation in the form d_{0^{+}}^{alpha}x(t)+f(t,x(t))=0, 0x(0)= x'(0)=0, x'(1)=beta x(xi), where $d_{0^{+}}^{alpha}$ denotes the standard riemann-liouville fractional derivative, 0an illustrative example is also presented.

The paper is an attempt to represent a study of limit points, boundary points, exterior points, border, interior points and closure points in the common generalized topological space. This paper takes a look at the possibilities of an extended topological space and it also considers the new characterizations of dense set.